Справочник Пользователя для Mitsubishi Electronics WS-55311

The normal use of a TV should include 

a mixture of TV picture types.  The most                  

frequently used picture types should fill 

the screen with constantly moving images 

rather than stationary images or patterns.              

Displaying the same stationary patterns over 

extended period of time or displaying the 

same stationary pattern frequently can leave 

subtle but permanent ghost images.  To avoid 

this, mix your viewing pattern.  Do not show 

the same stationary image for more than 15% 

of your total TV viewing in any given week.

Display constantly moving and changing 

images that fill the screen whenever possible.

This projection TV uses picture tubes to      

project the image to the screen.  All picture 

tubes age with use.  As they age, their light 

output is gradually reduced.  Normal TV 

pictures fill the screen with constantly      

changing images.  Under these conditions,  

picture tubes age at an even rate across the 

entire screen.  This maintains a TV picture 

that is evenly bright over the whole screen.  

Stationary images or images that only partially 

fill the screen (leaving black or colored bars 

to fill the screen), when used over extended 

periods of time or when viewed repeatedly, 

can cause uneven aging of the phosphors and 

leave subtle ghosts from the stationary images 

in the picture.

Still or stationary images may be received 

from broadcasters, cable channels, satellite        

channels, DVD discs, video tapes, laser 

discs, online services, web/Internet searching 

devices, video games, and digital TV 

tuner/converter boxes.  Examples of these 

types of images can be, but are not limited to 

the following:

  Letterbox top/botto

m black bars: 

shown at the top and bottom of the TV 

screen when you watch a widescreen 

(16:9) movie on a standard (4:3) TV.

  

Side bar images: solid bars shown on 

each side of an image when watching a 

standard (4:3) program on a widescreen 

(16:9) TV.

  

Stock-market report bars: ticker running 

at the bottom of the TV screen.

  

Shopping channel logos & pricing displays: 

bright graphics that are shown constantly or 
repeatedly in the same location.

  

  

Bright station logos: moving or low-contrast 

graphics are less likely to cause uneven aging 
of the picture tubes.

  

Online (Internet) websites: or any other            

stationary or repetitive computer style images.